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<script>
    var obj = {
        name: "张三",
        age: "22",
        sex: "男",
        height: "168cm",
    };
    function fn(obj) {
        var obj2 = {};
        for (var key in obj) {
            obj2[key] = obj[key];
        }
        return obj2;
    }
    console.log(fn(obj))
</script>

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